Koppers Holdings Inc. — 4/A Filings
72 4/A filings on record
This page lists all 4/A filings submitted to the SEC by Koppers Holdings Inc. (KOP), sorted by most recent first. Each row links to the full filing on EdgarLookup. Koppers Holdings Inc. has filed 72 4/A documents with the SEC since 2015. To view all SEC filings by Koppers Holdings Inc., see the full filings list.
All
10-K
10-K/A
10-Q
144
144/A
3
3/A
4
4/A
424B1
424B3
5
5/A
8-A12B
8-K
8-K/A
ARS
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
POS AM
POSASR
PRE 14A
S-1
S-1/A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4/A | FORM 4/A | 0001919175-26-000006 | Mar 3, 2026 | Feb 26, 2026 |
| 4/A | 4/A | 0000950170-25-037432 | Mar 11, 2025 | May 4, 2023 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010679 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010677 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010674 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010671 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010668 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010664 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010659 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-22-010654 | Feb 17, 2022 | Jan 5, 2022 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-21-011759 | Feb 18, 2021 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-017355 | Mar 9, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-016761 | Mar 5, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-016755 | Mar 5, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-016752 | Mar 5, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-016748 | Mar 5, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-016743 | Mar 5, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-016741 | Mar 5, 2020 | Mar 3, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009913 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009912 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009909 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009907 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009903 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009901 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009894 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-20-009892 | Feb 18, 2020 | Feb 11, 2020 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-17-019175 | Mar 8, 2017 | Mar 3, 2017 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-16-108060 | Mar 14, 2016 | Mar 1, 2016 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-16-106338 | Mar 7, 2016 | Mar 1, 2016 |
| 4/A | FORM 4/A - WALTER W. TURNER | 0001181431-15-005703 | Apr 9, 2015 | Mar 3, 2015 |
| 4/A | FORM 4/A - ROBIN ZHU | 0001181431-15-004541 | Mar 12, 2015 | Feb 21, 2015 |
| 4/A | FORM 4/A - MARKUS G. SPIESS | 0001181431-14-010936 | Mar 5, 2014 | Feb 22, 2014 |
| 4/A | FORM 4/A - ROBIN ZHU | 0001181431-14-010508 | Mar 4, 2014 | Feb 22, 2014 |
| 4/A | FORM 4/A - JIANZHONG ZHU | 0001181431-13-019048 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - WALTER W. TURNER | 0001181431-13-019047 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - LOUANN E. TRONSBERG-DEIHLE | 0001181431-13-019046 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - MARKUS G. SPIESS | 0001181431-13-019045 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - BRIAN H. MCCURRIE | 0001181431-13-019044 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - MARK R. MCCORMACK | 0001181431-13-019043 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - THOMAS D. LOADMAN | 0001181431-13-019042 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - STEVEN R. LACY | 0001181431-13-019041 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - LESLIE S. HYDE | 0001181431-13-019040 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - DONALD E. EVANS | 0001181431-13-019039 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - LEROY M. BALL | 0001181431-13-019038 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - JAMES T. DIETZ | 0001181431-13-019037 | Mar 27, 2013 | Feb 22, 2013 |
| 4/A | FORM 4/A - WALTER W. TURNER | 0001181431-13-018581 | Mar 25, 2013 | Jan 2, 2013 |
| 4/A | FORM 4/A - LOUANN E. TRONSBERG-DEIHLE | 0001181431-13-018580 | Mar 25, 2013 | Jan 2, 2013 |
| 4/A | FORM 4/A - MARKUS G. SPIESS | 0001181431-13-018579 | Mar 25, 2013 | Jan 2, 2013 |
| 4/A | FORM 4/A - BRIAN H. MCCURRIE | 0001181431-13-018578 | Mar 25, 2013 | Jan 2, 2013 |
| 4/A | FORM 4/A - MARK R. MCCORMACK | 0001181431-13-018577 | Mar 25, 2013 | Jan 2, 2013 |